FRONT LIFTING DEVICE FOR AN AGRICULTURAL MACHINE AND ASSOCIATED CONTROL METHOD

摘要

Disclosed is a device for hitching and lifting an agricultural tool, including a frame fastened to the agricultural machine, a first arm articulated on the frame with a first tool hitch at one end, at least one first jack, the cylinder or rod being connected to the frame, the other connected to the arm, the jack enabling moving the arm so the extent of the travel of the jack allows the end of the arm bearing the hitch to successively pass through a first (minimum low) position, a second (maximum high) position, and a third (retracted) position, of the supply of the jack, a unit for detecting the position of the end of the arm to deactivate the supply of the jack when the end reaches the second position, and a bypass controller for bypassing the controller of the detection unit, to reactivate the supply of the jack.